eTools.ch is a new Swiss based meta search engine that can display search results aggregated from several search engines such as Google, Yahoo!, Windows Live/MSN, Lycos, Ask and some others. (via)

What is unique about this search engine is that you can customize preferences so that the weighting of each search engine (from normal to important or very important) can be changed or disabled completely. Apart from that, one can set a timeout (for faster searches) or let eTools select its own choice of the fastest search engines. Another useful feature is that you can also save results to either a PDF or RSS (XML) file for research purposes.

eTools also has a mobile version of its meta search engine at http://www.etools.ch/mobile